Api support for requesting starred projects for user

Fixes #4112

CHANGELOG

 Please view this file on the master branch, on stable branches it's out of date.
 
 v 8.3.0 (unreleased)
+  - API support for starred projects for authorized user (Zeger-Jan van de Weg)
   - Add open_issues_count to project API (Stan Hu)
   - Expand character set of usernames created by Omniauth (Corey Hinshaw)
   - Add button to automatically merge a merge request when the build succeeds (Zeger-Jan van de Weg)

doc/api/projects.md

@@ -139,6 +139,21 @@ Parameters:
 - `sort` (optional) - Return requests sorted in `asc` or `desc` order. Default is `desc`
 - `search` (optional) - Return list of authorized projects according to a search criteria
 
+### List starred projects
+
+Get a list of projects which are starred by the authenticated user.
+
+```
+GET /projects/starred
+```
+
+Parameters:
+
+- `archived` (optional) - if passed, limit by archived status
+- `order_by` (optional) - Return requests ordered by `id`, `name`, `path`, `created_at`, `updated_at` or `last_activity_at` fields. Default is `created_at`
+- `sort` (optional) - Return requests sorted in `asc` or `desc` order. Default is `desc`
+- `search` (optional) - Return list of authorized projects according to a search criteria
+
 ### List ALL projects
 
 Get a list of all GitLab projects (admin only).

lib/api/projects.rb

@@ -39,6 +39,17 @@ module API
         present @projects, with: Entities::Project
       end
 
+      # Gets starred project for the authenticated user
+      #
+      # Example Request:
+      #   GET /projects/starred
+      get '/starred' do
+        @projects = current_user.starred_projects
+        @projects = filter_projects(@projects)
+        @projects = paginate @projects
+        present @projects, with: Entities::Project
+      end
+
       # Get all projects for admin user
       #
       # Example Request:

spec/requests/api/projects_spec.rb

@@ -139,6 +139,25 @@ describe API::API, api: true  do
     end
   end
 
+  describe 'GET /projects/starred' do
+    before do
+      admin.starred_projects << project
+      admin.save!
+    end
+
+    it 'should return the starred projects' do
+      get api('/projects/all', admin)
+      expect(response.status).to eq(200)
+      expect(json_response).to be_an Array
+
+      expect(json_response).to satisfy do |response|
+        response.one? do |entry|
+          entry['name'] == project.name
+        end
+      end
+    end
+  end
+
   describe 'POST /projects' do
     context 'maximum number of projects reached' do
       it 'should not create new project and respond with 403' do
@@ -471,7 +490,7 @@ describe API::API, api: true  do
     end
   end
 
-  describe 'PUT /projects/:id/snippets/:shippet_id' do
+  describe 'PUT /projects/:id/snippets/:snippet_id' do
     it 'should update an existing project snippet' do
       put api("/projects/#{project.id}/snippets/#{snippet.id}", user),
         code: 'updated code'